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ROOT NODULES IN SOME MEMBERS OF ZYGOPHYLLACEAE GROWING AT KARACHI
UNIVERSITY CAMPUS
Mohammad
Athar and A. Mahmood
Abstract: Bacterial root nodules
in Zygophyllaceae were re'ported from sandy soils of Egypt by Sabet
(1946) and Mostafa & Mahmoud (1951). Allen & Allen (1950) did not find
any endophyte in root nodules of
Tribulus
cistoides
L. Khan (personal communication) has also reported absence of nodules
in Zygophyllaceae. On the basis of these contradictory reports a survey
of Zygophyllaceae was made from Karachi University Campus Area. The soil
around this area is poor in nutrition and varies from sand to clay loam
in texture (Qadir
et al,
1966). Three genera namely
Tribulus, Zygophyllum
and
Fagonia
were surveyed. Fig. 1 shows nodules on roots of
Tribulus
terrestris
Linn, Fig. 2 shows nodules on roots of
Fagonia cretica
Linn., and Fig. 3 shows nodules on roots of
Zygophyllum
simplex
Linn.
Department of Botany, University of Karachi.
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